Question

4/5 is 3 3/5 of what number

Answer 1

Let the number be x.
3 3/5 of x = 4/5
18/5x = 4/5
x = 4/5 x 5/18
x = 4/18 = 2/9

The number is 2/9

Answer 2

Let the unknown number be x.

Then, 3 3/5 of x = 4/5

18/5 * x = 4/5

x = 4/5 * 5/18

x = 4/18

Therefore, x = 2/9 ...Ans.